WO2012068654A1 - Compressor shell - Google Patents

Compressor shell Download PDF

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Publication number
WO2012068654A1
WO2012068654A1 PCT/BR2011/000433 BR2011000433W WO2012068654A1 WO 2012068654 A1 WO2012068654 A1 WO 2012068654A1 BR 2011000433 W BR2011000433 W BR 2011000433W WO 2012068654 A1 WO2012068654 A1 WO 2012068654A1
Authority
WO
WIPO (PCT)
Prior art keywords
shell
hermetically
lid
compressor
height
Prior art date
Application number
PCT/BR2011/000433
Other languages
French (fr)
Inventor
Otávio SANTINI JUNIOR
Original Assignee
Whirpool S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirpool S.A. filed Critical Whirpool S.A.
Publication of WO2012068654A1 publication Critical patent/WO2012068654A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0033Pulsation and noise damping means with encapsulations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001Noise damping
    • F04B53/002Noise damping by encapsulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00Compressor arrangements
    • F25B31/02Compressor arrangements of motor-compressor units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/01Geometry problems, e.g. for reducing size
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/12Sound

Definitions

  • the present invention refers to a hermetically-sealed cooling compressor which presents a constructive arrangement that allows an in- crease in resonance frequencies, resulting, in productive terms, in an attractive handling of the noise generated by the compressor.
  • the shell of the compressor also has, among other functions, that of the oil reserve, gas reserve, as well as attenuation of the noise generated by the mechanical combination of the equipment.
  • the shell of a hermetically-sealed compressor is made of steel, being structurally divided into two main parts, the lid and the body. Also part of the combination that constitutes the shell are other smaller components, such as the base plate for fastening the compressor to the cooling system, the hermetic terminal for electrical connections, the fence and the suction passers, exhaust gas and process.
  • the process passer has the function of creating the vacuum and the gas load, as well as the insertion of oil.
  • the suction and exhaust passers connect the compressor to the cooling system being the circulation path of the cooling fluid.
  • the fence is a metallic sheet, usually welded exter- nally to the shell in the region of the hermetic terminal and has the function of supporting and protecting the electrical elements. The arrangement of a shell of the state of the art is presented by figure 1.
  • a shell of a hermetically-sealed cooling compressor comprising a lid associated to a body wherein the height of the lid is greater than the height of the body.
  • Figure 1 - is a side view of a shell for a hermetically-sealed compressor of the state of the art
  • Figure 2 - is a side view of a shell for a hermetically-sealed compressor of the present invention
  • Figure 3 - is a perspective view of a shell for hermetically-sealed compressor of the present invention.
  • Figure 4 - is a perspective view of the body of a shell for a hermetically-sealed compressor of the present invention
  • Figure 5 - is a perspective view of the lid of a shell for a hermeti- cally-sealed compressor of the present invention
  • Figure 6 - is a side view of the lid of a shell for a hermetically- sealed compressor of the present invention
  • Figure 7 - is a top view of the lid of a shell for hermetically- sealed compressor of the present invention.
  • Figure 8 - is a comparative graph of the frequencies based on the mode number between a shell of the state of the art and a shell of the present invention.
  • the present invention proposes a concept to reduce the noise of a hermetically-sealed compressor by geometric transformation of a shell 10 of a hermetically-sealed compressor.
  • references are drawn to applications for domestic and commercial cooling, such as refrigerators and freezers and for automotive cooling, such as air conditioners, the field of application of the present invention is not limited to these examples, and may be applied to any situation that uses cooling by a hermetically-sealed compressor.
  • the present invention consists of a metallic shell 10, preferably made of steel, which presents a lid 1 having a height greater than the body 2 of the shell 10. This arrangement may also be called shell with low profile welding (see figures 2 and 3).
  • the low profile welding enables increased structural rigidity of the shell 10, whereby providing an increase in the natural frequencies of the shell 10, thus reducing the sound potency radiated by the shell 10 of the compressor.
  • This constructive arrangement also allows a considerable reduction in volume of the shell 10, and this reduction will allow the obtainment of an increase in the useful cooling volume higher than 10%.
  • the arrangement of the shell 10 with low profile welding, not least by the reduction of its volume may, but not compulsorily, make it ne- cessary to replace other components of the shell 10, such as the hermetic terminal 4, the suction passer 3, the process passer 6 and the exhaust passer 7 presented in figure 1.
  • the present invention allows the presentation of the suction passer, process passer and exhaust passer tubes in any manner in the shell 10.
  • the disposition of the passers (not illustrated in the drawings relating to the present invention) will depend on the characteristics of each design.
  • the arrangement of the shell 10 with low profile welding is that in which the height of the lid (AT) is greater than the height of the body (AC) of the compressor, regardless of the position of the accessories, such as the hermetic terminal 4, the suction, exhaust and process passer tubes, and positioning of the base plate 5, and the base plate 5 can be associated both to the lid 1 and to the body 2 of the compressor.
  • the solution found to maintain a lesser volume of the shell 10 is achieved by maintaining the standard dimension of the base plate 5 and displacing the shell 10 to an end portion of the base plate 5 (see figures 2 and 3), whereby leaving the largest amount of space available on the base plate 5 at the side of the hermetic terminal 4.
  • This solution also allows the placement of the electrical components on the base plate 5.
  • a base plate 5 can be associated both to the lid 1 and to the body 2 of the compressor.
  • One of the major advantages achieved by using the new low profile welding is the freedom that the new lid 1 provides in terms of obtaining a geometry with very high resonance frequencies, whereby allowing a significant reduction in the thickness of the sheet without increasing the noise level of the compressor.
  • the shape of the shell 0 will depend on the geometric characteristics of the compressor.
  • the shell 10 presented in figures 2, 3, 5, 6 and 7 presents a geometry of the lid 1 similar to that of an egg, having curved surfaces without large flat areas. These geometric characteristics promote increased flexion rigidity of the shell 10.
  • the geometry of the shells of the state of the art presents the lid of the compressor with large flat areas (see example in figure 1).
  • a shell 10 with low profile welding and keep the standard thickness of the shells of the state of the art. Accordingly, there is achieved a shell 10 which, by the geometry favorable to the generation of frequencies much higher than in the state of the art, is capable of promoting a reduction in the level of noise emitted by the compres- sor, promoting comfort for its user. With the present invention it is possible to maintain in shells 10 with sheets of 2.00 mm, noise levels equivalent to compressors of the state of the art that use shells with a 3.0mm sheet.
  • the present invention enables the obtainment of shells 10 for hermetically-sealed compressors which for a same thickness of the sheet as the shells of the state of the art guarantees a more reduced radiation of noise or, alternatively, allows the maintenance of the same level of noise radiated to the thicknesses of smaller sheets.
  • Figure 3 shows a comparative modal graph of the frequencies based on the mode number between a shell of the state of the art and a shell 10 of the present invention. It can be easily identified that the vibration modes of the low profile shell 10 present much higher frequencies than those of the shell of the state of the art, which naturally translates into the capacity to radiate less noise from the compressor.
  • the height of the lid 1 being greater than the height of the body 2 enables the configuration of a geometry of the lid 1 with resonance frequency at least 15% higher than the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)

Abstract

The objective of the present invention is to provide a shell (10) for a hermetically-sealed cooling compressor that presents a constructive arrangement capable, by way of a novel geometry in which the height of the lid (1) is greater than the height of the body (2), to achieve a structurally more rigid shell (10). This novel geometric arrangement of the shell (10) is capable of providing much higher resonance frequencies than the state of the art whereby enabling a reduction in the noise emitted by the compressor, as well as a reduction in the production cost.

Description

Specification of Patent of Invention for "COMPRESSOR
SHELL".
The present invention refers to a hermetically-sealed cooling compressor which presents a constructive arrangement that allows an in- crease in resonance frequencies, resulting, in productive terms, in an attractive handling of the noise generated by the compressor.
Description of the State of the Art
Domestic, commercial and automotive cooling systems usually use hermetically-sealed compressors. Said compressors have a shell whose main function is to provide hermetic accommodation for the mechanical combination of the compressor.
Additionally, the shell of the compressor also has, among other functions, that of the oil reserve, gas reserve, as well as attenuation of the noise generated by the mechanical combination of the equipment.
Usually the shell of a hermetically-sealed compressor is made of steel, being structurally divided into two main parts, the lid and the body. Also part of the combination that constitutes the shell are other smaller components, such as the base plate for fastening the compressor to the cooling system, the hermetic terminal for electrical connections, the fence and the suction passers, exhaust gas and process.
The process passer has the function of creating the vacuum and the gas load, as well as the insertion of oil. The suction and exhaust passers connect the compressor to the cooling system being the circulation path of the cooling fluid. In turn, the fence is a metallic sheet, usually welded exter- nally to the shell in the region of the hermetic terminal and has the function of supporting and protecting the electrical elements. The arrangement of a shell of the state of the art is presented by figure 1.
One of the main objectives of manufacturers of compressors for cooling systems is, naturally, the reduction of the production cost of a com- pressor, also aiming to decrease the level of noise emittance that such a compressor generates when in operation.
To achieve such objectives there are, however, limits. On the one hand, it is of the essence to increase the thickness of the sheets that make up the body and the lid of the shell, seeking geometries which make them more rigid and, on the other hand, indirect techniques are applied that are capable of preventing the excitation of the mechanical combination of the compressor from reaching the shell. Among some of these solutions it is possible to identify the application of suspension springs to the combination and of acoustic filters.
In any case, the technology and the development applied to shells of the state of the art for hermetically-sealed compressors maintain an identical arrangement, that is, the technology of the state of the art always presents a shell having a body the height of which is greater than the height of the lid of the shell providing large flat areas. Therefore, it has not yet been possible to achieve a technology that is economic and sustainable being capable of reducing both the level of noise emitted by the compressor, as well as the cost of production.
Objectives of the Invention
It is therefore an objective of the present invention to provide a shell for a hermetically-sealed cooling compressor that presents a constructive arrangement capable of, by way of a novel geometry in which the height of the lid is greater than the height of the body, achieving a structurally more rigid shell.
It is also an objective of the present invention to provide a geometric arrangement of the shell capable of providing much higher resonance frequencies than in the state of the art whereby enabling a reduction in the noise emitted by the compressor.
It is a further objective of the present invention to provide a shell for a hermetically-sealed compressor that enables a reduction of the production cost.
Brief Description of the Invention
The objectives of the present invention are achieved through the provision of a shell of a hermetically-sealed cooling compressor comprising a lid associated to a body wherein the height of the lid is greater than the height of the body.
Brief Description of the Drawings
The present invention will now be described in greater detail based on the examples of execution represented in the drawings. The draw- ings show:
Figure 1 - is a side view of a shell for a hermetically-sealed compressor of the state of the art;
Figure 2 - is a side view of a shell for a hermetically-sealed compressor of the present invention;
Figure 3 - is a perspective view of a shell for hermetically-sealed compressor of the present invention;
Figure 4 - is a perspective view of the body of a shell for a hermetically-sealed compressor of the present invention;
Figure 5 - is a perspective view of the lid of a shell for a hermeti- cally-sealed compressor of the present invention;
Figure 6 - is a side view of the lid of a shell for a hermetically- sealed compressor of the present invention;
Figure 7 - is a top view of the lid of a shell for hermetically- sealed compressor of the present invention;
Figure 8 - is a comparative graph of the frequencies based on the mode number between a shell of the state of the art and a shell of the present invention.
Detailed Description of the Drawings
The present invention proposes a concept to reduce the noise of a hermetically-sealed compressor by geometric transformation of a shell 10 of a hermetically-sealed compressor.
It is known that the efficiency of radiation of noise of the shell 10 of a compressor is greater in the resonance frequencies thereof, and the higher the noise frequencies, the lower the sensitivity of the human ear to this noise. Based on this knowledge, there was developed a shell 10 capable of providing a frequency curve effectively higher than the state of the art, whereby achieving a hermetically-sealed compressor for domestic, commer- cial or automotive cooling capable of guaranteeing more comfortable working conditions for the user.
Although references are drawn to applications for domestic and commercial cooling, such as refrigerators and freezers and for automotive cooling, such as air conditioners, the field of application of the present invention is not limited to these examples, and may be applied to any situation that uses cooling by a hermetically-sealed compressor.
The present invention consists of a metallic shell 10, preferably made of steel, which presents a lid 1 having a height greater than the body 2 of the shell 10. This arrangement may also be called shell with low profile welding (see figures 2 and 3).
The low profile welding enables increased structural rigidity of the shell 10, whereby providing an increase in the natural frequencies of the shell 10, thus reducing the sound potency radiated by the shell 10 of the compressor. This constructive arrangement also allows a considerable reduction in volume of the shell 10, and this reduction will allow the obtainment of an increase in the useful cooling volume higher than 10%.
The arrangement of the shell 10 with low profile welding, not least by the reduction of its volume may, but not compulsorily, make it ne- cessary to replace other components of the shell 10, such as the hermetic terminal 4, the suction passer 3, the process passer 6 and the exhaust passer 7 presented in figure 1.
The present invention allows the presentation of the suction passer, process passer and exhaust passer tubes in any manner in the shell 10. This means that the tubes can be presented both in the body 2 or in the lid 1 , and may be disposed in any region of the body 2 or of the lid 1. The disposition of the passers (not illustrated in the drawings relating to the present invention) will depend on the characteristics of each design.
It is noted that the arrangement of the shell 10 with low profile welding is that in which the height of the lid (AT) is greater than the height of the body (AC) of the compressor, regardless of the position of the accessories, such as the hermetic terminal 4, the suction, exhaust and process passer tubes, and positioning of the base plate 5, and the base plate 5 can be associated both to the lid 1 and to the body 2 of the compressor.
Regarding the manufacturers of domestic cooling systems, it is common to use a standard size base plate 5 of the compressor having di- mensions of approximately 200 x 100 mm. Owing to the fact that the low profile welding shell 10 allows the already mentioned reduction in its volume, a smaller base plate 5 could be used, however, such solution would lead to destandardization.
In a preferred but not compulsory arrangement, the solution found to maintain a lesser volume of the shell 10 is achieved by maintaining the standard dimension of the base plate 5 and displacing the shell 10 to an end portion of the base plate 5 (see figures 2 and 3), whereby leaving the largest amount of space available on the base plate 5 at the side of the hermetic terminal 4. This solution also allows the placement of the electrical components on the base plate 5. In any case, it is worth noting that, as referred to above, a base plate 5 can be associated both to the lid 1 and to the body 2 of the compressor.
One of the major advantages achieved by using the new low profile welding is the freedom that the new lid 1 provides in terms of obtaining a geometry with very high resonance frequencies, whereby allowing a significant reduction in the thickness of the sheet without increasing the noise level of the compressor.
It is interesting to highlight that the shape of the shell 0 will depend on the geometric characteristics of the compressor. For example, the shell 10 presented in figures 2, 3, 5, 6 and 7 presents a geometry of the lid 1 similar to that of an egg, having curved surfaces without large flat areas. These geometric characteristics promote increased flexion rigidity of the shell 10. Contrariwise, the geometry of the shells of the state of the art presents the lid of the compressor with large flat areas (see example in figure 1).
In terms of design, it is possible to reduce the thickness of the sheet of the shell 10, decreasing the productive cost of the metallic material of which the shell 10 is comprised, without compromising at all the level of the noise emitted by the equipment using a hermetically-sealed compressor having a shell 10 with low profile welding.
To have an idea of the reduction capacity of the thickness of the sheet of the shell 10, the following example is noted. Shells of the state of the art that use sheets with thickness varying from 2.7 mm to 3.5 mm were substituted by shells 0 with low profile welding with sheet thickness of substantially 2.0 mm. The present invention has in these cases allowed a reduction in thickness of the sheet of 26% to 42%. It is worth pointing out that the present invention can be applied to any thickness of sheet.
Alternatively, it is possible to use a shell 10 with low profile welding and keep the standard thickness of the shells of the state of the art. Accordingly, there is achieved a shell 10 which, by the geometry favorable to the generation of frequencies much higher than in the state of the art, is capable of promoting a reduction in the level of noise emitted by the compres- sor, promoting comfort for its user. With the present invention it is possible to maintain in shells 10 with sheets of 2.00 mm, noise levels equivalent to compressors of the state of the art that use shells with a 3.0mm sheet.
Therefore, the present invention enables the obtainment of shells 10 for hermetically-sealed compressors which for a same thickness of the sheet as the shells of the state of the art guarantees a more reduced radiation of noise or, alternatively, allows the maintenance of the same level of noise radiated to the thicknesses of smaller sheets.
Figure 3 shows a comparative modal graph of the frequencies based on the mode number between a shell of the state of the art and a shell 10 of the present invention. It can be easily identified that the vibration modes of the low profile shell 10 present much higher frequencies than those of the shell of the state of the art, which naturally translates into the capacity to radiate less noise from the compressor. The height of the lid 1 being greater than the height of the body 2 enables the configuration of a geometry of the lid 1 with resonance frequency at least 15% higher than the state of the art.
In addition to the advantages already mentioned, the reduction of volume occupied by the compressor when applied to a cooling system, al- lows an increase of 10% to 20% of the useful cooling area.
The advantages are enormous as they enable the construction of a cooling system with greater useful volume for cooling, with lower radiation of noise and at a much lesser production cost.
Having described a preferred embodiment, it should be understood that the ambit of the present invention encompasses other potential variations, which are limited only by the content of the accompanying claims, which include possible equivalents.

Claims

1. A shell (10) of a hermetically-sealed cooling compressor comprising a lid (1) associated to a body (2), characterized wherein the height of the lid (1) is greater than the height of the body (2).
2. A shell (10) of a hermetically-sealed compressor according to claim 1 , characterized wherein the body (2) is associated to a base plate (5).
3. A shell (10) of a hermetically-sealed compressor according to claims 1 and 2, characterized wherein the shell (10) is disposed on a substantially end region of the base plate (5).
4. A shell (10) of a hermetically-sealed compressor according to claims 1 to 3, characterized wherein the hermetic terminal (4) is associated to the body (2) of the compressor.
5. A shell (10) of a hermetically-sealed compressor according to claims 1 to 4, characterized wherein the hermetic terminal (4) is associated to the lid (1) of the compressor.
6. A shell (10) of a hermetically-sealed compressor according to claims 1 to 5, characterized wherein the hermetic terminal (4) is disposed in a region which is on the base plate (5).
7. A shell (10) of a hermetically-sealed compressor according to claims 1 to 6, characterized wherein a suction passer, a process passer and an exhaust passer are disposed randomly in the shell (10).
8. A shell (10) of a hermetically-sealed compressor according to claims 1 to 7, characterized wherein a suction passer, a process passer and an exhaust passer are disposed in the lid (1).
9. A shell (10) of a hermetically-sealed compressor according to claims 1 to 7, characterized wherein a suction passer, a process passer and an exhaust passer are disposed in the body.
10. A shell (10) of a hermetically-sealed compressor according to claims 1 to 9, characterized wherein the height of the lid (1) being greater than the height of the body (2) allows the configuration of a geometry of the lid (1) with resonance frequency at least 15% higher than a shell (10) with the height of the (1) lower than the height of the body (2).
11. A shell (10) of a hermetically-sealed compressor according to claims 1 to 10, characterized wherein the lid (1) is associated to the body (2) by means of a joining process.
12. A shell of a hermetically-sealed compressor (10) according to claims 1 to 11 , characterized wherein the lid (1) is associated to the body (2) by means of welding.
13. A shell of a hermetically-sealed compressor (10) according to claims 1 to 12, characterized wherein the shell is made of steel.
PCT/BR2011/000433 2010-11-26 2011-11-22 Compressor shell WO2012068654A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI1004871-5A BRPI1004871A2 (en) 2010-11-26 2010-11-26 compressor housing
BRPI1004871-5 2010-11-26

Publications (1)

Publication Number Publication Date
WO2012068654A1 true WO2012068654A1 (en) 2012-05-31

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ID=45315360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2011/000433 WO2012068654A1 (en) 2010-11-26 2011-11-22 Compressor shell

Country Status (2)

Country Link
BR (1) BRPI1004871A2 (en)
WO (1) WO2012068654A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3404263A1 (en) * 2017-05-19 2018-11-21 Whirlpool S.A. Hermetic compressor for positive displacement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274942A (en) * 1940-03-30 1942-03-03 Touborg Jens Lubricated refrigerant compressor
US2312596A (en) * 1940-02-27 1943-03-02 Gen Motors Corp Refrigerating apparatus
US3098604A (en) * 1955-07-07 1963-07-23 Gen Electric Hermetic refrigerant compressor
US4411600A (en) * 1979-11-09 1983-10-25 Hitachi, Ltd. Hermetic motor compressor
GB2179709A (en) * 1983-07-25 1987-03-11 Copeland Corp Hermetic refrigeration compressor
US20020051716A1 (en) * 2000-08-08 2002-05-02 Seung-Don Seo Hermetic compressor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312596A (en) * 1940-02-27 1943-03-02 Gen Motors Corp Refrigerating apparatus
US2274942A (en) * 1940-03-30 1942-03-03 Touborg Jens Lubricated refrigerant compressor
US3098604A (en) * 1955-07-07 1963-07-23 Gen Electric Hermetic refrigerant compressor
US4411600A (en) * 1979-11-09 1983-10-25 Hitachi, Ltd. Hermetic motor compressor
GB2179709A (en) * 1983-07-25 1987-03-11 Copeland Corp Hermetic refrigeration compressor
US20020051716A1 (en) * 2000-08-08 2002-05-02 Seung-Don Seo Hermetic compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3404263A1 (en) * 2017-05-19 2018-11-21 Whirlpool S.A. Hermetic compressor for positive displacement

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Publication number Publication date
BRPI1004871A2 (en) 2013-03-19

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